You speak the German "H" like the englisch "H" as you have it at the beginning of the word "have". Don't make a "J" out of it. ;-)
"geht" is not pronounced with any kind of "i". It is simply a long "e".
You can listen to this sentence here: http://www.youtube.com/watch?v=guNhpRz_vgw (not my video. I just found it on Youtube)
2010年5月18日
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Hallo. Wie geht es Ihnen?
Se pronuncia: Jalo. Vi geit es inen?